please do problem 11 and show work

11. Big Money, Inc. has four departments. The cafeteria serves each of them. The cafeteria cost is allocated to each of the departments based on the number of employees in each department. Total cafeteria cost per month is $17,500. The four departments and the number of employees in each is: Collections 120 employees Soliciting 200 employees Admin 50 employees Legal 30 employees Total 400 employees